Home / 287,911.23-431,930.03-88,246.64

Finding the Fourth Proportional to 287,911.23, 431,930.03 and 88,246.64

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Solution

The fourth proportional to 287,911.23, 431,930.03 and 88,246.64 is: 132,389.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,911.23 : 431,930.03 = 88,246.64 : x
  2. Step 2: Convert to fraction form
    287,911.23/431,930.03 = 88,246.64/x
  3. Step 3: Cross multiply
    287,911.23x = 431,930.03 × 88,246.64
  4. Step 4: Simplify right side
    287,911.23x = 38,116,373,862.60
  5. Step 5: Solve for x
    x = 38,116,373,862.60/287,911.23
  6. Step 6: Final answer
    x = 132,389.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.